*{
    margin: 0;
    padding:0;
    list-style: none;
}
.banner{
    width: 100%;
    height: 385px;
    background-image: url(../image/bookfirst1.jpg);
    border: 2px solid black;
    background-size: contain;
    text-align: center;
    background-position: center;
}
.center-box{
    width: 100%;
    height: 385px;
    margin: 0px auto;
}
.center-box>ul{
    height: 150px;
}
.center-box>ul>li{
    list-style: none;
    float: left;
    line-height: 35px;
}
.item{
    padding: 27px;
}
.user{
    margin-left: 60%;
}
.user>a,.person>a,.help>a{
    background-color: rgba(172, 96, 26, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
}
.name{
    width: 325px;
    height: 76px;
    margin-left: 70px;
}
a{
    text-decoration: none;
}
.search-box{
    width:80%;
    height:100px;
    background-color:#fff;
    border-radius:10px;
    margin-left: 10%;
    position: relative;
    bottom: -110px;
}
.search-box>input{
    margin-top: 20px;
    width: 963px;
    height: 47px;
    border-radius: 5px;
    border-color: lavender;
}
.btn{
    width: 139px;
    height: 47px;
    background-color: #51262d;
    display: inline-block;
    line-height: 47px;
    border-radius: 5px;
    text-decoration: none;
    outline: #51262d;
    color: white;
    font-size: 20px;
}
.center{
    width: 100%;
    height: 371px;
    background-color:#f1ece5;
}
.center-nav{
    width: 80%;
    padding-top: 90px;
    margin: 0px auto;
}
.item-nav{
    width: 130px;
    height: 130px;
    display: inline-block;
    float: left;
    border-radius: 5px;
    text-align: center;
}
.item-nav>span{
    display: inline-block;
    width: 100%;
    padding-top: 100px;
    background-repeat: no-repeat;
    background-size: 60px 60px;
    background-position: center;
    font-size: 20px;

}
.all{
    background-color: #51262d;
    border-radius: 5px;
    margin-right: 62px;
    margin-bottom: 16px;
    font-family: cursive;
    font-size: 20px;
}
.a {
    background-color: #f1ece5;
    border-radius: 5px;
    margin-right: 62px;
    margin-bottom: 16px;
    font-family: cursive;
    font-size: 20px;
}
img.cartlogo{
    width: 80px;
    height: 80px;
    margin-top: 20px;
    margin-left: 26px;
    display: block;
}
.books{
    background-color: #ebe7d5;
}
.showbooks{
    width: 70%;
    margin: 0px auto;
}
.content-item{
    width: 253px;
    height: 339px;
    background-color: white;
    padding: 30px;
    margin-right: 34px;
    margin-top: 40px;
    border-radius: 15px;
    display: inline-block;
}
.cover-box{
    width: 210px;
    height: 248px;
    margin: auto 17px;
}
.book-title{
    width: 253px;
    height: 40px;
    margin-bottom: 15px;
    text-align: center;
    font-size: 20px;
    color: black;
}
.book-author{
    width: 253px;
    height: 19.2px;
    text-align: center;
    font-size: 14px;
    color: #999;
}
.showbooks>a{
    position: relative;
    display: inline-block;
}
.btn1{
    width: 158px;
    height: 51px;
    text-align: center;
    margin: 40px 424px;
}